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Priming Piston Service

Priming Piston Service

Disconnect the Pump

WARNING

PRESSURIZED FLUID HAZARD
This equipment stays pressurized until pressure is

relieved manually. To help prevent serious injury

from moving parts, or from pressurized fluid, such

as splashing in the eyes or on skin, follow the

Pressure Relief Procedure in your system manual

when you stop pumping and before you clean,

check, or service the equipment.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when

in the work area to help prevent serious injury,

including eye injury, hearing loss, or inhalation of

toxic fumes.

This procedure involves thoroughly disassembling

and cleaning the individual parts in the pump lower

unit. Prior to performing this procedure, flush the

pump and relieve pressure as described in the

system manuals, disconnect all hoses, and remove

the pump from the system.
1. Release the upper clamp (123) holding the

displacement pump to the tie rod plate (122).

2. Slide the pump down from the air motor. Tilt the

pump and pull the displacement rod (117) out of

the coupler (C). Remove the gasket (102).

Note: Be careful not to scratch the displacement

rod.

Figure 1 Remove displacement pump.

Disassemble the Pump

Note: Pump Repair Kit 24G550 is available.

Purchase the kit separately. Kit parts are

marked with an * in the parts section. See

Priming Piston Displacement Pump Model 25M906,

25M906C31, page 9

.

1. Remove the retaining pin (116) from the

connecting rod (109). Slide off the priming piston

(108).

2. Release the lower clamp (123) to remove the

intake valve housing (107) from the pump

cylinder (101). Remove the gasket (102).

3. Remove the poppet (114), spring (113), and

valve stop (111) off the connecting rod (109).

4. Remove the bearing (112) from the center of the

valve stop (111).

5. Remove the packings (115) from the center of

the poppet (114).

Figure 2 Remove priming piston.

6. Push the displacement rod (117) out through the

bottom of the cylinder (101).

3A5564A

5

Содержание SaniForce

Страница 1: ... drum unloader systems For professional use only Important Safety Instructions Read all warnings and instructions in this manual and in related system manuals Save all instructions Maximum Working Air Pressure 100 psi 0 7 MPa 6 9 bar Maximum Working Fluid Pressure 650 psi 4 5 MPa 44 8 bar PROVEN QUALITY LEADING TECHNOLOGY ...

Страница 2: ...erformance chart 12 Technical Data 13 Graco Standard Warranty 14 Models Pump Model Pump Lower Replacement Pump Type Approvals 25M912 25M906 25M912C31 25M906C31 Priming Piston Pump EC 1935 2004 Related Manuals Manual Number Title 3A5400 SaniForce Pail Unloader SPU System Operation 3A5401 SaniForce Pail Unloader SPU System Repair Parts 3A5402 SaniForce Drum Unloader Operation 3A5404 SaniForce Drum U...

Страница 3: ...Related Manuals 3A5564A 3 ...

Страница 4: ... from the system Notes Be sure to follow your national and state sanitary standard codes and local regulations Use appropriate cleaning and disinfecting agents at intervals appropriate for product processed Follow cleaning product manufacturer s instructions The pump must be disassembled to thoroughly clean it 1 Loosen the hand screw 13 and remove the upper shield 6 2 Clean thoroughly the surface ...

Страница 5: ...rom the system 1 Release the upper clamp 123 holding the displacement pump to the tie rod plate 122 2 Slide the pump down from the air motor Tilt the pump and pull the displacement rod 117 out of the coupler C Remove the gasket 102 Note Be careful not to scratch the displacement rod Figure 1 Remove displacement pump Disassemble the Pump Note Pump Repair Kit 24G550 is available Purchase the kit sep...

Страница 6: ...Install the seal 120 on the piston valve housing at the top of the connecting rod 109 Place the ball 110 on the seat of the housing Install the displacement rod 117 over the top of the connecting rod so the holes in both parts align Secure with the retaining pin 118 and o ring 119 3 Lubricate and place the packing housing 103 in the top of the cylinder 4 Lubricate and slide the displacement rod 11...

Страница 7: ...only 3 Apply sanitary lubricant to ease assembly 4 Apply medium strength blue thread locker 5 Apply an appropriate medium strength thread locker on the nut 13 every time it is installed to prevent it from coming loose during operation Torque to 30 36 ft lb 41 49 N m Do not over tighten 3A5564A 7 ...

Страница 8: ... SCREW cap M8 x 1 25 sst 4 10 24G862 FITTING air inlet 1 2 npt includes Ref 23 1 11 16C946 FITTING 3 4 npt 1 12 165053 O RING PTFE 1 13 16C306 NUT hand 1 15 17W547 LABEL warning not shown 1 21 GROMMET see Kits 6 22 16G084 FITTING air inlet 1 2 npt 1 23 166702 O RING air inlet buna n included with Ref 10 1 Replacement Danger and Warning labels tags and cards are available at no cost These parts are...

Страница 9: ...Priming Piston Displacement Pump Model 25M906 25M906C31 Priming Piston Displacement Pump Model 25M906 25M906C31 3A5564A 9 ...

Страница 10: ...ON priming 1 109 16C195 ROD connecting 1 110 103462 BALL 3 4 in 19 mm stainless steel 1 111 195215 STOP inlet valve 1 112 604016 BEARING priming piston 1 113 501095 SPRING ball check 1 Ref Part Description Qty 114 604018 POPPET inlet valve 1 115 603778 PACKING inlet valve neoprene 2 116 604008 PIN retaining priming piston 1 117 902983 ROD displacement 1 118 169845 PIN retainer 1 119 167972 O RING ...

Страница 11: ...Product Dimensions Product Dimensions Model A in cm B in cm C in cm D in cm 25D363 40 1 102 20 6 52 16 0 41 2 5 6 4 Add 2 5 in 6 3 cm to allow for full extension of the priming piston rod 3A5564A 11 ...

Страница 12: ...t oil 700 4 8 48 25 0 71 30 0 85 35 1 0 100 0 7 7 200 1 4 14 300 2 1 21 400 2 8 28 500 3 4 34 600 4 1 41 1 0 3 8 2 0 7 6 3 0 11 4 4 0 15 1 5 0 14 10 0 28 15 0 42 20 0 57 0 15 30 45 60 0 A 100 psi 0 7 MPa 7 bar B 70 psi 0 5 MPa 5 bar C 40 psi 0 3 MPa 3 bar fluid flow air consumption Air Flow scfm m 3 min 0 A C B A C B 12 3A5564A ...

Страница 13: ...imum Ambient Temperature Air Motor 120 F 49 C Air Inlet 1 2 npt f Air Exhaust 3 4 npt m Fluid Inlet Type 2 3 in 5 8 cm Priming Piston with flange for 6 in 15 2 cm Clamp Fluid Outlet 1 1 2 in 3 8 cm Tri clamp Weight 35 lb 16 kg Wetted Parts 316 Stainless Steel Buna N Polychloroprene Nitrile Nylon UHMWPE Certain models have PTFE packings Sound data Sound power 78 5 dBA Sound pressure 71 6 dBA Sound p...

Страница 14: ...es for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale GRACO MAKES NO WARRANTY AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES EQUIPMENT MATERIALS OR COMPONENTS SOLD ...

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